Sticking lifetime of ultracold CaF molecules in triplet interactions
arXiv:2303.07611 · doi:10.1021/acs.jpca.3c01676
Abstract
A six-dimensional potential energy surface is constructed for the spin-polarized triplet state of CaF-CaF by \textit{ab initio} calculations at the CCSD(T) level of theory, followed by Gaussian process interpolation. The potential is utilized to calculate the density of states for this bi alkaline-earth-halogen system where we find the value 0.038 K, implying a mean resonance spacing of 26 K in the collision complex. This value implies an associated Rice-Ramsperger-Kassel-Marcus lifetime of 18 s, thus predicting long-lived complexes in collisions at ultracold temperatures.